(Q22101635)
Statements
30 July 1909Gregorian
1 reference
Robert Leffingwell
9 October 2017
18 October 1984
1 reference
Robert Leffingwell
9 October 2017
11 February 1952
0 references
Identifiers
Sitelinks
Wikipedia(1 entry)
- dewiki Robert G. Leffingwell